FILE – In this Aug. 18, 2016, file photo, Usain Bolt celebrates winning the gold medal in the men’s 200-meter final during the athletics competitions of the 2016 Summer Olympics at the Olympic Stadium in Rio de Janeiro, Brazil. The man who reshaped the record book and saved his sport along the way is saying goodbye. His runs through the 100 meters and Jamaica’s 4×100 relay at next week’s world championships are expected to produce golds yet again, along with leaving people to wonder who could possibly take his place.